Abstract: Flexible drip cap for use with fenestration units and related methods. The flexible drip cap includes a flange member and a cap member attached to each other along a length of the drip cap, with a seal member located between the flange member and the cap member. The seal member provides a seal to limit water infiltration between the flange member and the cap member when the drip cap is positioned on a fenestration unit.

Abstract: Fenestration units with spacer blocks and methods of manufacturing the same are described herein. The fenestration units may include shim wedges that cooperate with the spacer blocks to raise the fenestration unit within a rough opening.

Abstract: A system is provided for coupling individual fenestration units together and sealing the gaps between them so as to form a sealed compound fenestration unit. The individual fenestration units include mating channels and tabs or other connectors that are attached to outside frame surfaces of the individual fenestration units. When the connectors are coupled together, they attach the frames of the individual fenestration units securely together in such a way that gaps are formed between the units along their joined frame surfaces. The gaps are sealed by resilient sealing strips that are configured to be inserted into the gaps, and that are formed with seals that bear against the walls of the gaps to form impervious moisture seals.